Electrically-controlled cloth guider and the like



July 6,1926. 1,591,906

A; WOOD ET AL ELECTRICALLY CONTROLLED CLOTH GUIDER AND THE LIKE F lAugust 12, 1924 3 sheets-sheet 1 July 6 1926.

A. woos ET 3 Sheets-Sheet 2 Filed August 12, 1924 July 6 1926; I1,591,906

A. WOOD ET AL.

ELECTRICALLY CONTROLLED CLOTH GUIDER AND'THE LIKE File August 12, 1924 3Sheets-Sheet 5 Patented July 6, 1926.

units MAncHEsTEn,

ENGLAND.

nLno TRIoALL Y-con'rnomnn CLOTH enrnnn AND THE LIKE.

Application filed August 1524, Serial No. "k ll 6 42, and Great Iritainand Hell-1nd hug 11st This invention refers to electrically-coir trolledcloth guiders and the like wherein electrdmagnets are used tocontrolgu'iding rollers, andvwherein are teeler levers which are acted upon bythe selvedges of the cloth and which in turn control the circuits of themagnets. The main object of this invention is to provide a new orimproved circuit breaker or controller with each electro-1nagnet whichwill febetteradapted for rapid fand constant managing breaking controlling) of the circuit and will not require the same attention, or tobe renewed so nequery, as the ordinary netal-to-metal spring-pressedtype ofi circuit breaker or controller. A further object is to providean .improved arrangement of electricallycontrolled gamers as anattachment to, or an integral part theniachine with which they requireto be used, instead ofbeing embodied in a separate machine Anotherobject is to p'royide a construction of electrically-controlled gui'dersattached to or forniing' partof the machine and, adapted to guide two ormor s-man er cloth simultaneously. I The foregoing objects of theinvention, together with meanswherebythe same may be carriedinto efiect,will best be understood from the following description of two forms orembodiments thereof illustrated in the accompanying drawings.

In said drawingsz I p I Fig. 1 illustrates a front elevation and I Fiei-2 a Pl n Vie at he im r 910th guider according to one example of theinvention. H V H v Fig. 3 is a plan iew of oi the invention, while U n ap igs. 4 and 5 illustrate crosslsections of partot theguider as showninFigs. l and 3 i sp e vely dr s P M r er s le Fig. 6 illustrates a rearelev'ation, and v a Figs. 7 and 8 aleft and right hand View respectivelydrawn to a larger scale, of one of the roller and magnet units of theimproved machine. V I U I I pp 7 Fig. 9 illustrates an enlarged sectonal elevation of the electrical inake-and-break inechanisnr used withthe improved roller a further example and magnet units. v

Fig. 10 illustrates enlarged sectional elevation of a modificationhereinafter described. a k M I Incarrying out the first part ot' theinvention and as shown in Figs. 6 to 9 two gated carbon 6 first slidesupon th e round 'carbonsn, Z), are employed, The carbon a is round inshape and the other carbon 6 is elongated or substantially rectangularin shape two of its lon er sides being slightly concave. The roundcarbon a is mounted on a pin a extending from a fixed metal plate asecured to an insulating block a, and the elongated carbon Z) is mountedon a plate-like lever (Z pivoted at its lower end to the feeler lever e.The metal plated? formed with a tongue or spur a with curved extremity,see Fig. 9, and lying the plane of the lever d carrying the elongatedcarbon 5 the normal position of the parts being with the two carbons incontact, i. e. one resting upon or against the other, in which positionthey complete the circuit of the adjacent On the teeler lever emovelectromagnet. V n ng towards the insulating bloclr c the eloncarbonat and then rapidly moves awaytrom same in the arc of a circle, thislatter movement being broug t about the lever vd, carrying the elongatedcarbon, nieetingthe end of the metal tongue or spur a which tilts thelever about its pivot al on the feeler lever and thereby rapidly breaksthe contact between the two carbons, On the feeler lever 6 moving in adirection the insulating block c the elongated carbon 6 is first quicklylowered by gravity into contact withthe round carbon a and then causedto slide thereon before coining to rest The lever 05 may be ofvulcanitegor like insulating material and the carbon l b mayj lieagainst a facing of sheet copper (Z which will entend to a screwterminal d? on the lever, connected a flexible conducting wire 01* to afixed terminal 0 on the insulating block 0. v V j Theinsulating block 0is provided With the terminals c 0 c, c for the leads to and from theelectro-magnets, the carbon holders, the main or source of current, andearth return. n n

The carbons may partake or other shapes but by making one round and theother elongated they allow of prolonged use; the round blocl; merelyrequiring to be given a slight rotation periodically when showing signsof wear, and the elongated block allowing of being reversed when Wornon. one side and of its four sides being brought tobear successively onthe round block. lhe use of carbon contacts and particularly iiielectrographite carbon contacts is found highly satisfactory inpractice, and enables a current of high voltage to be used direct from apower main.

In the end brackets n, a, see Figs. 1. 2 and S are arranged theelectrical terminal blocks to which the leads from the main areconnected, and the leads to the guide roller magnets, the latter beingconnected in parallel.

In Fig. 1, the terminal block in the left hand bracket is connec ed by athree-wire cable 0 to the terminal block in the right hand bracket, andcombined with one of the terminal blocks is a common switch 2)controlling the magnets of both pairs of guide rollers.

From each end terminal extends the further three wire cable whichconnected to the 'te minals c, c and c of the insulating block 0 of thecontact breaker, see Fig. 9.

In carrying out the further features of the invention, the said improvedelectric controlling mechanism is housed in a metal box 7' provided onits rear side with metal straps or loops 7, by which it is slidablymounted on a metal bar g extending across the machine.

In one with the metal box is formed a guide plate 7L1 and detachablysecured to said box is a further guide plate h' the two plates lying ata slight distance apart to allow the cloth to be guided to pass between.\Vith said box is pivotally mounted the feeler lever e which at itslower end has a pin or stud 6 which extends horizontally across thespace between said guide plates, these latter being formed with slots h.

In a recess cast in one end of the box 7' is an electromagnet 2', thepoles of which lie flush with or project slightly beyond the outer faceof the casting and mounted upon the free end of one of the radius armsj, hinged to the guide plate l2 and carrying one of the guide rollers71: is a soft-iron keeper or armature Z. In fixed bearings m on theguide plate if is the companion guide roller it the rollers lyingparallel and their axes being inclined to the horizontal, see Fig. (5.The carrier bar extends from end bracket n to end bracket a or. fromside frame to side frame of the machine with which the guiders are to beused. Or, when not desired, or when not practicable to make theapparatus integral with the machine, the said bar is mounted in separatebrackets arranged in front of the machine.

For guiding a single width of cloth there will be two pairs of guiderollers 7J1, 732, one for one edge of the cloth and the other for theother edge, each pair being separately controlled. When two or morewidths of cloth require to be guided at once, two carrier bars 5/, ,7may be provided and one bar arranged to the rear of and slightly higherthan the other, and each bar having its guide roll arranged below it,see Figs. 3 and 5. Upon one bar are two pairs of guide rollers and uponthe other bar one pair, each pair being electrically controlled and eachadjust-able along the bar to suit the width of cloth to be guided. Inthe case of narrow cloth, two or more widths of cloth may be guided byone bar, two or more sets of guide rollers being on said bar.

in rig. ll) the electrical contact breal-ier is arranged to operate withthe feclcr lever pin (2 above, instead of below the contactbreaker. Inthis case the required rapid breaking movement is obtained by means ofthe fixed pin (0 against which the carbon, carrying lever d bears on thefeeler lever moving it towards the block 0, the lever being pivoted andproportioned so as to cause the feeler lever pin or; normally to bearagainst the end of its cloth.

The carbon blocks a, Z) will preferably be detachably secured on theirrespective supporting studs or pins (4 and If by means of forked springkey members engaging grooves in the pins and flush with the carbons.

In the block b are small holes, one of which engages a pin on the levere to prevent accidental displacement of the carbon.

lVhat we claim is 1. In electrically-controlled cloth guiders, a pair ofend brackets, at least one cross-bar connecting said end brackets, pairsof boxes slidably mounted on said cross-bar, a pair of inclined guiderollers carried by each box, one roller being movable towards and awayfrom the other, a pair of guide plates on each box, and a feeler leverfor each pair of plates and rollers, an electro-magnet housed in eachbox, said magnets being connected in parallel, a circuit breaker alsohoused within each box, said circuit breaker comprising a pair ofcontact blocks one of which is relatively stationary while the other iscapable of being moved bodily first in sliding contact with thestationary block and then rapidly away from said block, and vice versa,as set forth.

2. In electrically-controlled cloth guiders, a pair of end brackets. atleast one crossbar connecting said end brackets, pairs of boxes slidablymounted on said cross-bar. a. pair of inclined guide rollers carried byeach box, one roller being movable towards and away from the other, apair of guide plates on each box,-and a feeler lever for each pair ofplates and rollers, an electro-magnet housed in each box, said magnetsbeing connected in parallel, a circuit breaker also housed within eachbox, said circuit breaker comprising a round stationary carbon block,and an elongated movable carbon block, means for pivot-ally supportingthe movable carbon block on the feeler lever, the said lOt) the movablecarbon, after sliding over the stationary carbon, is caused to moverapidly away in the arcof a circle, as set forth.

3. In electrically-controlled cloth guiders, guider units comprising ametal box with slotted lugs to allow it'to slidably fit a crossbar,bearings for the axis of a roller in one with said box, and a guideroller on said axis, a further roller and axis therefor, levers pivotedto the box for carrying said further roller axis, the axes of the tworollers being inclined, guide plates with slots and lying a slightdistance apart, secured to the box, a pivoted feeler lever within thebox having a cross pin which projects through the slots and across thespace between the guide plates, an electro-magnet housed in the box anda circuit breaker also housed in said box, the circuit breakercomprising a pair of contact blocks, one stationary and the othermovable, a relatively stationary plate with cam'-shaped edge carryingthe stationary contact block, a lever made of insulating materialcarrying the movable block, said lever being pivoted on the said feelerlever, and lying in the plane of the plate with cam-shaped edge, andopposite such edge, and on the teeler lever being moved to break thecircuit of the electro magnet, first sliding the movable contact blockover the stationary block and then quickly separating the blocks, as setforth. In testimony whereof we have signed our names to thisspecification.

ABRAHAM WOOD.

'GRANVILLE l/VOOD.

